This is the Linux version of the classic 3D game of Doom. This software runs under either Xfree86 or SVGAlib. In case you don't know what Doom is, the object of the game is to kill as much as possible while finding your way through a maze.
Tucows, Inc has graciously donated a copy of this software to the Internet Archive's Tucows Software Archive for long term preservation and access. Please check the Tucows website for all current versions of the software.